diff --git a/src/bit.ml b/src/bit.ml
index 38a3725..b483868 100644
--- a/src/bit.ml
+++ b/src/bit.ml
@@ -1,3 +1,11 @@
+(**
+ * Copyright (c) 2015, Fabien Freling
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD 2-clause license found in the
+ * LICENSE file at the top level directory of this source tree.
+ *)
+
 let is_set num i =
   if i < 0 then
     failwith "Invalid bit index."
diff --git a/src/cartridge.ml b/src/cartridge.ml
index c82ae24..a0d908c 100644
--- a/src/cartridge.ml
+++ b/src/cartridge.ml
@@ -1,3 +1,11 @@
+(**
+ * Copyright (c) 2015, Fabien Freling
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD 2-clause license found in the
+ * LICENSE file at the top level directory of this source tree.
+ *)
+
 (** http://bgb.bircd.org/pandocs.htm#thecartridgeheader *)
 
 
diff --git a/src/cpu.ml b/src/cpu.ml
index 9f13e3d..1f8477e 100644
--- a/src/cpu.ml
+++ b/src/cpu.ml
@@ -1,3 +1,11 @@
+(**
+ * Copyright (c) 2015, Fabien Freling
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD 2-clause license found in the
+ * LICENSE file at the top level directory of this source tree.
+ *)
+
 open Printf
 
 let frequence = 4194304
diff --git a/src/hexa.ml b/src/hexa.ml
index cd3ee88..a8900d0 100644
--- a/src/hexa.ml
+++ b/src/hexa.ml
@@ -1,3 +1,11 @@
+(**
+ * Copyright (c) 2015, Fabien Freling
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD 2-clause license found in the
+ * LICENSE file at the top level directory of this source tree.
+ *)
+
 open Printf
 
 let rec print_slice ?(width=8) b start last =
diff --git a/src/memory.ml b/src/memory.ml
index 5ae0af1..62e2369 100644
--- a/src/memory.ml
+++ b/src/memory.ml
@@ -1,3 +1,11 @@
+(**
+ * Copyright (c) 2015, Fabien Freling
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD 2-clause license found in the
+ * LICENSE file at the top level directory of this source tree.
+ *)
+
 open Bytes
 open Printf
 
diff --git a/src/oboy.ml b/src/oboy.ml
index 11a9bbb..1153381 100644
--- a/src/oboy.ml
+++ b/src/oboy.ml
@@ -1,3 +1,11 @@
+(**
+ * Copyright (c) 2015, Fabien Freling
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD 2-clause license found in the
+ * LICENSE file at the top level directory of this source tree.
+ *)
+
 open Printf
 
 let fps = 60
diff --git a/src/screen.ml b/src/screen.ml
index 8f29776..d458bf8 100644
--- a/src/screen.ml
+++ b/src/screen.ml
@@ -1,3 +1,11 @@
+(**
+ * Copyright (c) 2015, Fabien Freling
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD 2-clause license found in the
+ * LICENSE file at the top level directory of this source tree.
+ *)
+
 let width = 160
 let height = 144
 
@@ -87,4 +95,3 @@ let render mem =
   let scy = Memory.get mem 0xFF42 |> int_of_char in
   let scx = Memory.get mem 0xFF43 |> int_of_char in
   scx + scy
-
diff --git a/src/timer.ml b/src/timer.ml
index 50fbea0..ee2ba29 100644
--- a/src/timer.ml
+++ b/src/timer.ml
@@ -1,3 +1,10 @@
+(**
+ * Copyright (c) 2016, Fabien Freling
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD 2-clause license found in the
+ * LICENSE file at the top level directory of this source tree.
+ *)
 
 let frequence = 4194304